> >Steve Kistler commented:
> >
> >>His [Bob Freeman] vast expertise advised me against trying to build
> >>a Quad TA crank! out
> >>of the Paramount's exising TA triple.
> >>How to make a TA quad crank??? Bob said expensive and rare parts?
> >>Suggestions?
> Roy Drinkwater wrote:
> >Well, it's just long bolts and spacers. Harvey Sachs has
> >probably done one. The major problem is that the smallest ring is
> >26T.
>
My main points were, first, what bb would you use other than a custom Phil
Wood (and imagine the "Q" factor), then what front derailleur would shift
that wide, and after that what shifter would move the front derailleur that
far, but lastly, why would one ever need more than a triple other than to be
the only kid on the block? I am for simplicity wherever possible, and though
I sometimes use a triple for long steep mountain rides, I prefer a double for
everything else, except for just plain flat rides when a fixed gear is just
fine.
By the way Steve (and others who might be interested) - I can build you a Campy triple with a 26 to 32T if you want to keep the Paramount more authentic but with lower gears. The mid and large should not be too spread for a front derailleur to shift them comfortably. I like a 30-42-47 combo myself. Shifts fine with Campy front derailleur. I have a large supply of Ofmega triple bolt/spacers and a very accurate jig to drill a Campy or other 144 bcd cranks to take a 74 bcd inner ring, of which there are a multitude of nice ones that will work (including TA!) This costs $50 incl the bolt/spacers + whatever small chainring you want, with your crank.
Bob Freeman
Seattle, WA